We are live on ! Find out more
William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+1.99%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$29.4B
AUM Growth
+$519M
Cap. Flow
+$281M
Cap. Flow %
0.96%
Top 10 Hldgs %
23.58%
Holding
1,987
New
99
Increased
752
Reduced
666
Closed
108

Top Buys

Rank Stock Value
1
ABNB icon
Airbnb
ABNB
+$45.2M
2
CHWY icon
Chewy
CHWY
+$31.5M
3
U icon
Unity
U
+$23.3M
4
RYAN icon
Ryan Specialty Holdings
RYAN
+$22.4M
5
AMZN icon
Amazon
AMZN
+$21.5M

Top Sells

Rank Stock Value
1
IDXX icon
Idexx Laboratories
IDXX
+$37.7M
2
GD icon
General Dynamics
GD
+$33.5M
3
ECL icon
Ecolab
ECL
+$31.7M
4
JNJ icon
Johnson & Johnson
JNJ
+$20.9M
5
UBER icon
Uber
UBER
+$19.2M

Sector Composition

Rank Sector Weight
1 Technology 26.19%
2 Healthcare 19.81%
3 Financials 11.61%
4 Consumer Discretionary 10.68%
5 Industrials 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
IXJ icon
1401
iShares Global Healthcare ETF
IXJ
$4.24B
$244K ﹤0.01%
2,920
+1,406
+93% +$122K
TDIV icon
1402
First Trust NASDAQ Technology Dividend Index Fund
TDIV
$4.48B
$242K ﹤0.01%
4,280
– –
RYAAY icon
1403
Ryanair
RYAAY
$31B
$240K ﹤0.01%
5,445
-243
-4% -$10.5K
CE icon
1404
Celanese
CE
$4.82B
$237K ﹤0.01%
+1,572
New +$242K
HWM icon
1405
Howmet Aerospace
HWM
$110B
$237K ﹤0.01%
7,605
-177
-2% -$5.7K
LAD icon
1406
Lithia Motors
LAD
$8.34B
$234K ﹤0.01%
737
-20
-3% -$6.96K
MGA icon
1407
Magna International
MGA
$18.7B
$234K ﹤0.01%
3,105
-1,958
-39% -$161K
ENPH icon
1408
Enphase Energy
ENPH
$5.33B
$233K ﹤0.01%
1,552
-706
-31% -$121K
SH icon
1409
ProShares Short S&P500
SH
$838M
$233K ﹤0.01%
3,826
– –
Z icon
1410
Zillow
Z
$7.76B
$233K ﹤0.01%
2,642
-12
-0.5% -$1.21K
CNK icon
1411
Cinemark Holdings
CNK
$4.41B
$232K ﹤0.01%
12,088
+26
+0.2% +$442
DEM icon
1412
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.98B
$232K ﹤0.01%
5,307
+25
+0.5% +$1.12K
NWL icon
1413
Newell Brands
NWL
$2.7B
$232K ﹤0.01%
10,475
+197
+2% +$5.03K
UFPI icon
1414
UFP Industries
UFPI
$5.13B
$232K ﹤0.01%
3,406
– –
ATOM icon
1415
Atomera
ATOM
$227M
$231K ﹤0.01%
10,000
– –
EWT icon
1416
iShares MSCI Taiwan ETF
EWT
$11.6B
$231K ﹤0.01%
3,719
-126
-3% -$8.03K
SQSP
1417
DELISTED
Squarespace, Inc.
SQSP
$231K ﹤0.01%
5,980
– –
DWM icon
1418
WisdomTree International Equity Fund
DWM
$694M
$230K ﹤0.01%
4,347
+11
+0.3% +$606
VERV
1419
DELISTED
Verve Therapeutics
VERV
$229K ﹤0.01%
4,875
-30,725
-86% -$1.81M
VMBS icon
1420
Vanguard Mortgage-Backed Securities ETF
VMBS
$15.7B
$229K ﹤0.01%
4,306
-1,621
-27% -$86.6K
VG
1421
DELISTED
Vonage Holdings Corporation
VG
$229K ﹤0.01%
14,200
– –
XLRN
1422
DELISTED
Acceleron Pharma
XLRN
$228K ﹤0.01%
+1,323
New +$173K
CNS icon
1423
Cohen & Steers
CNS
$4.37B
$227K ﹤0.01%
2,710
– –
PKG icon
1424
Packaging Corp of America
PKG
$22.9B
$227K ﹤0.01%
+1,653
New +$236K
UHS icon
1425
Universal Health Services
UHS
$10.1B
$227K ﹤0.01%
1,643
– –
55 56
57
58 59

Similar funds

Parallax Volatility Advisers
Parallax Volatility Advisers San Francisco, California $38.6B AUM 45.89% 1-Year Est. Return
Credit Agricole
Credit Agricole Montrouge Cedex, France $38.1B AUM
Carson Wealth (CWM LLC)
Carson Wealth (CWM LLC) Omaha, Nebraska $38.1B AUM 19.66% 1-Year Est. Return
Nomura Asset Management
Nomura Asset Management Tokyo, Japan $38.8B AUM 30.94% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $37.7B AUM 34.44% 1-Year Est. Return
Fayez Sarofim & Co
Fayez Sarofim & Co Houston, Texas $39.1B AUM 15.14% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return
First Manhattan
First Manhattan New York $36.1B AUM 11.5% 1-Year Est. Return

William Blair & Company's Q3 2021 Portfolio in Review

As of Q3 2021, William Blair & Company held 1,987 positions worth $29.4B, up 1.8% from $28.9B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q3 2021 filing shows 99 new, 752 increased, 666 reduced and 108 closed positions. Its largest new stake was Ryan Specialty Holdings: 709,555 shares worth $24M. The largest sale was Idexx Laboratories, an estimated $37.7M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 26% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q3 2021 buy was Ryan Specialty Holdings: 709,555 shares worth $24M.
  • William Blair & Company added most to Airbnb in Q3 2021, an estimated $45.2M increase.
  • William Blair & Company's biggest Q3 2021 reduction was Idexx Laboratories, cutting an estimated $37.7M.
  • William Blair & Company fully exited Slack Technologies, Inc. in Q3 2021, selling an estimated $13.8M.
  • William Blair & Company's ten largest holdings make up 24% of its $29.4B portfolio in Q3 2021.
  • William Blair & Company opened 99 new positions and closed 108 in Q3 2021.
  • William Blair & Company's portfolio value rose 1.8% quarter-over-quarter to $29.4B.

Based on William Blair & Company's 13F filing for Q3 2021, filed 12 Nov 2021.